4 papers
Block Alpha-Circulant Preconditioners for All-at-Once Diffusion-Based Covariance Operators
Jemima M. Tabeart, Selime Gürol, John W. Pearson +1
Covariance matrices are central to data assimilation and inverse methods derived from statistical estimation theory. Previous work has considered the application of an all-at-once…
The HyperFrog Cryptosystem: High-Genus Voxel Topology as a Trapdoor for Post-Quantum KEMs
Victor Duarte Melo
HyperFrog is an experimental post-quantum Key Encapsulation Mechanism that explores a variant of the Learning With Errors (LWE) design space in which the secret is not sampled from…
Shifted cotangent bundles, symplectic groupoids and deformation to the normal cone
Damien Calaque, Pavel Safronov
This article generalizes the theory of shifted symplectic structures to the relative context and non-geometric stacks. We describe basic constructions that naturally appear in this…
Quantum invariants arising from are q-holonomic
Jennifer Brown, Nathan Geer
We show that the quantum invariants arising from typical representations of the quantum group are q-holonomic. In particular, this implies the existence of…